It is time to demand a world safe from destructive fossil fuels, and the ravages of climate change.

Yesterday, 310,000 people took to the streets of New York City to call for climate action — the largest climate march in history. And we were joined by hundreds of thousands of others around the world at over 2646 events in 156 countries.

And on Tuesday, the world’s politicians will gather in New York to talk about climate action — 125 heads of state in total. They’ll be gathering with the knowledge that more people than ever are demanding action, not just words, and that their political future is on the line — as well as the future of the planet.

We will bring that message to the top leadership of the UN inside Tuesday’s summit, with a hand-delivered message to top UN climate negotiators.

If you stand with the hundreds of thousands of people who marched around the world, tell world leaders that you mean business: act.350.org/letter/ready-for-action